Francis c



(No Model.) l 4 l?. C'. BROWN.

` FOUNTAIN PEN.

- Patented Jan.v 31, 189.3...

me Nonms PETERS co.. Fumo-nwo., wAsHmoroN. D. c,

UNITED STATES PATENT OFFICE.

FRANCIS C. BROWN, OF NEW YORK, N. Y.

FOUNTAIN-PEN.

SPECIFlCATION forming part of Iletters Patent No. 490,862, dated January31, 1893.

Application filed March 18, 1892.

To a/ZZ whom it may concern.-

Beit known that I, FRANCIS OAsHEL BROWN, a citizen of the United States,residing at New York, in the county and State of NewYork, have inventedcertain new and useful Improvements in Fountain-Pens; and I do herebydeclare the following to be a full, clear,`

and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make'and use the same,reference being had to the accompanying drawing, and to the letters ofreference marked thereon, which form a part of this specification.

My invention relates to improvements in fountain pens and is designed toprevent the ink from running out of the pen in drops when the reservoiris nearly empty or when the pen is suddenly inverted into writingposition.

My invention consists in mounting loosely in the barrel or tube a ballor Weight with means by which the ball or weight is arrested at a pointabove the discharge outlet, whereby the ball or weight acts as aresistance to the `increased Volume of air as the ink is Withdrawn, andis adapted to rest freely in the closed end of the barrel when not inuse, all as hereinafter explained.

In the accompanying drawing the figure represents a longitudinal sectionof a fountain pen showing one manner of mounting or suspending the ballor drop weight.

The barrel, A, and other parts of the pen are constructed in the usualmanner where the air is supplied from the tip. The tip is screwed intothe barrel as shown.

D, represents a disk of rubber, cork, or other non-corrodible materialadapted to closely lit the barrel, and has connected centrally thereof aiexible cord or chain, E, ofa length corresponding to a little more thanhalf the length of the barrel, more or less, to the end of which cord orchain is connected a ball or weight G Serial No. 425,451. (No model.)

of non-corrodible material,tthe Iiexibility of the cord or chainpermitting the free movement of the ball or Weight in the barrel withincertain limits; this ball or weight is of less diameter than the bore ofthe barrel to permit the ink to flow freely around it When the barrel isfull in a manner that will be readily understood.

By constructing the pen as above described a resistance or support isformed to the increased pressure of airV behind the column of ink as theink is gradually withdrawn or used, and as a consequence the ink isprevented from being forced out in drops, and by such Y.

construction the ink is also prevented from being forced out when thepenis suddenly inverted, and especially so when there is little ink inthe pen.

By suspending the ball or, weight by the cord or chain as abovedescribed, it will be seen that the weight is caused to move or vibratewith each movement of the hand in writing, and as a consequence causes amore even and uniform distribution of the ink, all of which will bereadily apparent and appreciated.

Having thus described my invention, what I claimk as new therein anddesire to secure by Letters Patent is:-

In a fountain pen, a barrel or tube, a ball or Weight loosely containedtherein, and a device by which the movement of the ball or weightisarrested at a point above the discharge outlet, substantially asdescribed, whereby the ball or weight acts as a resistance to theincreased volume of air as the ink is withdrawn, and is adapted to restfreely in the closed end of the barrel when not in use, as set forth.

FRANCIS C. BROWN.

Witnesses:

CAMILLE QUESNEL, WILLIAM H. FAULDER.

